Understanding DDR5 RAM: Specs, Performance, and Future

Started by: TechGuru October 26, 2023
TG

Hey everyone!

With the latest generation of processors starting to widely adopt DDR5 RAM, I wanted to start a discussion to really dive deep into what makes it tick and what we can expect. I've been doing a lot of reading and experimenting, and I'm excited to share some insights and hear yours!

Key features of DDR5 include:

  • Higher Clock Speeds: Starting at 4800MHz and going up significantly, offering a substantial bandwidth increase over DDR4.
  • Increased Capacity: Modules can now hold up to 128GB per stick, enabling much larger total system memory.
  • Improved Power Efficiency: While voltages are lower (1.1V vs 1.2V for DDR4), efficiency is enhanced through better internal architecture and two independent 32-bit channels per module.
  • On-Die ECC: This helps improve data integrity at the module level, though it's not a replacement for full system ECC.
  • New Architecture: Features like Decision Feedback Equalization (DFE) help maintain signal integrity at higher speeds.

What are your thoughts on the real-world performance gains? Are the higher prices justified for the average user, or is this primarily for enthusiasts and professionals right now? Let's discuss!

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SK

Great topic, TechGuru!

I upgraded my rig to a DDR5 system a few months ago, and the difference in certain applications, especially in creative workloads like video editing and large-scale simulations, is quite noticeable. Loading times for massive project files are significantly reduced. For gaming, the gains are more nuanced. While frame rates can see a bump, it's not always as dramatic as the bandwidth figures suggest, often depending heavily on the game's engine and optimization.

The price is still a major barrier, though. When you factor in the motherboard cost and the RAM itself, it's a hefty investment. I'm hoping prices will come down over the next year or two as adoption becomes more widespread.

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MD

I agree with SiliconeKing. For gaming, the sweet spot for DDR4 was often around 3200-3600MHz CL16. With DDR5, it's less about raw speed and more about reducing latency relative to that speed. You see some insane clock speeds (6000MHz+), but the timings are still quite high compared to high-end DDR4. I've seen benchmarks where very fast DDR4 can compete closely with decent DDR5 kits.

The real future is probably in the higher-end kits and maybe advancements in how the memory controller works. Also, the higher capacity is going to be a game-changer for workstation users.

One thing I'm curious about is the future of overclocking on DDR5. Are we going to see the same extreme OC headroom that we saw with DDR4?

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